Garbage-furnace



(No Model.) 4 Sheets-Sheet 1.

W. S. HULL. GARBAGE FURNACE.

No.543,134. PatentedlTuly 23,1895.

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(No Model.) 4 Sheets-$heeb 2.

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I GARBAGE FURNACE. N0. 543,134. Patented July 23, 1895.

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. GARBAGE FURNACE. No. 543,134. Patented J 1y 23, 1895.

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A t e e h S m e e h S 4 n NU M L Um HP w A B 3 A G a d 0 M 0 W PatentedJuly 23, 1895.

UNIT D STATES PATENT OFFICE.

WILLIAM S. HULL, OF DALLAS, TEXAS.

GARBAGE-FURNACE.

SPECIFICATION forming part Of Letters Patent No. 543,134, dated July 23,1895. Application filed June 28,1894. Serial No. 515,916- (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM S. HULL, a citizen of the United States,residing at Dallas, in the county of Dallas, State of Texas, haveinvented certain new and useful Improvements in Garbage-Furnaces, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

This invention relates to certain new and useful improvements ingarbage-furnaces for the cremation of garbage, night-soil, and the like;and it has for its objects, among others, to provide a furnace thatshall be simple, durable, cheaply constructed, and easily attended andfired, and by which the moisture from the material being treated shallbe completely evaporated and the material thus deprived of its moisturerapidly burned. Provision is made for the rapid evaporation of themoisture from the material, and for the easy handling of the materialbefore and after it is introduced into the furnace.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon,form a part of thisspecification, and in which- Figure lis alongitudinal vertical sectionthrough the improved furnace. Fig. 2 is a vertical cross-section on theline 2 2 of Fig. 1. Fig. 3 is a front elevation thereof. Fig. 4 is ahorizontal section on the line 4 at of Fig. 3 looking down. Fig. 5 is across-section on the line 5 f Fig. 2 looking down. Fig. 6 is a detail intop plan showing the dump-door, the platform-door being removed andparts broken away. Fig. 7 is a sectional plan of the dump-box and itsslide-doors and their guides.

Like letters of reference indicate like parts,

. throughout the several views.

Referring now to the details of the drawings by letter, A designates thefurnace proper, built of suitable material upon proper supports, allparts thereof which come in contact with the'fires or extreme heat beinglaid up with fire-brick or analogous material. The furnace in its groundplan is substantially in the form of a cross, as seen best in Figs. 4and 5.

A is the chimney or stack of suitable form,

which maybe extended to any desired height.

B is a double inclined driveway supported upon suitable uprights B, asshown best in Fig. 3, and in this platform or driveway, at a pointdirectly over the dump-box is a hinged door or gate B as seen best inFigs. 2 and 5, and directly beneath the said door is the top door 0 tothe dump-box, which is shown in this instance as hinged (see Fig. 6) andwhich may be of any desired form of construction. This dump-box D issupported upon the brick arch D, which forms the roof of the centralcombustion-chamber of the furnace, and upon opposite sides it isprovided with the doors D which are mounted to slide in suitable guidesd as seen best in Fig. 7, which guides are formed by plates (1, whichare secured to the inner faces of the other sides of the dump-box, as isclearly seen in said Fig. 7. These doors are designed to be raised andlowered in their guides by means of a rope or chain d suitably connectedtherewith, as shown in Fig. 2, and suspended from a crane D supportedabove the top of the furnace and braced by the brace-arm 01 as shown.With the doors B and 0 open, these side doors maybe easily raised. Theyare preferably provided with a plurality of perforations near theirlower end as shown at d" in Fig. 1.

- The interior arrangement of the furnace is shown in Figs. 1, 2, and 4.From these views it will be seen that the dump-box rests centrally uponthe arch D',beneath which is the central combustion-chamber E, which isprovided with the oppositely-disposed dues or passages e, as seen inFigs. 1, 2, and 4.

At opposite ends of the furnace are the grates F of any desired form andupon which the fires are started, the products of the combustion passingthroughthe course indicated by the arrows in Figs 1 and 2.

lVithin the combustion-chamber E is an inclined support or platform G ofbricks, which, as shown best in Fig. 2, are laid loosely in pyramid formwithout mortar, so as to provide crevices for the absorption of fluidsfrom the material as it finds its way thereto from the dump-box, eitherthrough crevices in the walls thereof or through fissures, as indicatedby dotted lines in Fig. 1.

At opposite ends of the furnace are provided openings g, as shown bestin Fig. 1, provided with suitable closures, and through which theattendant may rake the material down toward the ends after it leaves thedumpbox. Suitable openings h are provided for cleaning out the ashesbeneath the grates, as indicated in Figs. 2 and 4.

Upon opposite sides of the central combustion-chamber and between thesame and the grates I arrange the pyramidal evaporatingsurfaces H, whichare formed of bricks or analogous material laid loosely in pyramidalform without mortar, except the lower course or courses, which are laidin mortar upon an inclined bed I, as shown best in Fig. l. The surfaceof the bricks presents a plane following the contour of the brick as theset-outs are made to assume the pyramid form, as shown, so as to thebetter conduct the liquids throughout the greater surface and providefor the more complete evaporation thereof. It will be seen that whilethe said bricks are set upon beds inclining from the outer portiontoward the central arch the upper surface of the platforms are inclinedin the opposite direction, so that the material, as it falls from thedump-box, will find its way or be easily raked down onto the grates,which are located at the outer edges thereof, as shown best in Fig. 1.

In the extension A of the furnace is arranged an auxiliary grate I, asseen best in Figs. 2 and 4, which is located at the end of the inclinedplatform G, as shown, and which is provided with a side opening '6,through which it may be fed.

Beneath the grates and central combustionchamber is a conduit or tunnelJ, as seen in Fig. 2, through which the products of combustion and odorsare conducted, as indicated by the arrows, to and up through the stackA. A suitable opening j, closed by a suitable closure, is provided forcleaning out the stack when occasion requires. Such is shown in Figs. 2and 4. The bed of the platform G is provided with small passages g, asseen in Fig. 2, through which the moisture or fluids may trickle, shouldany pass through the interstices of the platform without beingcompletely evaporated.

WVith the parts constructed and arranged substantially as above setforth the operation is as follows: Fires being started in the grates,

the carts containing the garbage are driven up the inclined driveway andthe doors B and 0 opened, the side doors D being closed and the materialdumped into the dump-box. The doors are then closed. The material isallowed to remain in the box as long as of bricks of the platforms G andII and gradually carried to the central combustion-cham' her and thetunnel or conduit, where final evaporation takes place. No fluid everreaches any of the grate-bars, and the construction is such as to keepup uniform evaporation, so thatin case of flood or dearth the fires aredoing similar service. After the garbage has become somewhat dried inthe dump-box, one or the other orboth of the side doors are raised andthe material allowed to fall upon the pyramid floor or floors H, fromwhere it is easily handled byhoes or rakes or books, always pullingdownward and forward until it finally reaches the large grates, wherecomplete combustion takes place, none of the garbage comingin contactwith thepermanent fires. At times verylittle fuel will be used, exceptsuch as is dried out of the garbage. The flames pass up the inclinedpyramids, thence through the dues under the brick arch into the centralcombustion-chamber and down the incline in the combustion-chamber, (atthis point drying such fiuidsas are brought through the fissures inthewalls) thence over the secondary fire in the grate I, and, returni-ngunder it, passing through the tunnel J, where final combustion of thegases and evaporation of the fluids that find their way into the tunneltakes place. From the tunnel the remaining inoffensive gases pass intothe stack and out at the top thereof.

Modifications in detail may be resorted to without departing from thespirit of the invention or sacrificing any of its advantages.

What is claimed as new is 1. In a garbage furnace, the combination witha platform of bricks arranged loosely to absorb fluids, of means forfeeding material thereto and means by which the material is destroyed,said platform being arranged to be subjected to the heat from the fireand combustion chambers, as set forth.

2. In a garbage furnace, the combination with a platform formed ofbricks laid in inclined planes with crevices to conductfluids toevaporating points, of means for feeding material thereto and means asthe fire chambers for destroying such'material, as set forth.

3. In a garbage furnace, the combination with bricks laid looselyinpyramidal form, of means for feeding material thereto, and means as thefire chambers for destroying such ma terial, said bricks being arrangedto be subjected to the heat from said chambers, as set forth.

4. In a garbage furnace, the combination with bricks laid loosely inpyramidal form upon inclined beds, of means for feeding material theretoand means as the fire chambers by which the material is destroyed, saidmeans being located so that the bricks are subjected to the heattherefrom, as set forth.

5. In a garbage furnace, the combination with centralcombustion'chamber, of an inclined platform therein composed of bricksset inclinedly and a base therefor having passages, the fire chambersupon opposite sides of said platform, and the flue leading beneath thebase and communicating with the chimney, said passages being designed toestablish communication between the space above the base and the fluebelow it, substantially as specified.

6. In a garbage furnace, the combination with the fire chambers and acentral combustion chamber between the same, of pyramidal foraminousplatforms upon opposite sides of the central chamber upon inclined bedsthe upper surfaces of the platforms being oppositely inclined to thebeds, the walls of the central chamber having passages above saidplatforms and provided with openings communicating with the firechambers, substantially as specified. V

7. In a garbage furnace, the combination with the fire chambers and acentral combustion chamber, of an inclined platform within the centralchamber, a base therefor with passages for the liquid a tunnel beneaththe same and communicating with the stack, and pyramidal platforms uponopposite sides-0f the the platform in the central chamber, and means forintroducing liquid matter into the central chamber, substantially asspecified.

8. In a garbage furnace, bricks laid loosely in pyramidal form withinclined beds and the loose course or courses laid in mortar upon saidbeds, combined with means for feeding material thereto and with means asthe fire chambers for burning such material, substantially as specified.

9. In a garbage furnace, a foraminous pyramidal evaporating surfacehaving its upper face inclined oppositely from its bed, and the centralchamber and its inclined platform, combined with means for feedingmaterial to the above mentioned evaporating surface, a foraminous baseand the fire chambers upon opposite sides of the said surface fordestroying the material, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM S. HULL.

Witnesses:

J NO. T. HULL, JOHN W. TAYLOR.

